From 8668a3c468ed55d19514117a5a959d91d3d03823 Mon Sep 17 00:00:00 2001 From: Eddie Dong Date: Wed, 10 Oct 2007 14:26:45 +0800 Subject: [PATCH] KVM: VMX: Reset mmu context when entering real mode Resetting an SMP guest will force AP enter real mode (RESET) with paging enabled in protected mode. While current enter_rmode() can only handle mode switch from nonpaging mode to real mode which leads to SMP reboot failure. Fix by reloading the mmu context on entering real mode. Signed-off-by: Yaozu (Eddie) Dong Signed-off-by: Qing He Signed-off-by: Avi Kivity --- drivers/kvm/mmu.c | 1 + drivers/kvm/vmx.c | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/kvm/mmu.c b/drivers/kvm/mmu.c index 71716182d59d..feb5ac986c5d 100644 --- a/drivers/kvm/mmu.c +++ b/drivers/kvm/mmu.c @@ -1049,6 +1049,7 @@ int kvm_mmu_reset_context(struct kvm_vcpu *vcpu) destroy_kvm_mmu(vcpu); return init_kvm_mmu(vcpu); } +EXPORT_SYMBOL_GPL(kvm_mmu_reset_context); int kvm_mmu_load(struct kvm_vcpu *vcpu) { diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c index bcc1e398a976..f130c01422cf 100644 --- a/drivers/kvm/vmx.c +++ b/drivers/kvm/vmx.c @@ -1128,6 +1128,7 @@ static void enter_rmode(struct kvm_vcpu *vcpu) fix_rmode_seg(VCPU_SREG_GS, &vcpu->rmode.gs); fix_rmode_seg(VCPU_SREG_FS, &vcpu->rmode.fs); + kvm_mmu_reset_context(vcpu); init_rmode_tss(vcpu->kvm); } -- 2.20.1